It is crucial that we understand the notion that because something is good, it does not mean that more is better - i.e. fasting 16 hours daily forever or going on week long water-only fasts. The body does not like extreme behavior. Our mind, however, tends to be very black-white thinking and falls victim to restrictive diets. Diets which tend to hurt us in the long run, yet gaining short-term instant results.
What works in the short-term does not work in the long run, when it comes to extremism around food habits - whether that be low-fat veganism, all-meat carnivore diet og high-fat keto.
Below is a study confirming that long-term keto has shown to train the body into hyper-reacting to healthful complex carbs in addition to increasing blood lipids. The way we eat or restrict certain foods over time, changes our biochemistry to adapt to the types of food we are eating.
Thus any dietary changes should happen slow and gradual to allow our biochemistry time to adapt and not “freak out”.
I.e. people who have not eaten meat for long periods of time, will decrease digestive enzymes needed to break down meat. If they suddenly start eating meat, they will get physically ill. Not because meat is bad, but because their biochemistry has adapted to eating differently.
This has nothing to do with health, but about how our biochemistry tends to adapt to our dietary patterns over time.
Rather than going on a short-term strategy which is not sustainable healthwise for the long-run, I recommend simply adhering to smart food-combining based on glycemic load of the entire meal, rather than focusing on each food individually, which makes no sense, unless we are eating a mono-diet of one food per meal only.
“Overall, our current data demonstrate that maintenance on a KD may impair glucose tolerance over time and have detrimental effects on the ability to mount a sufficient insulin response to a high-carbohydrate meal. The effects on glucose homeostasis, however, are rapidly reversible upon resumption of a high-carbohydrate diet. Finally, despite the effects of a KD on peripheral insulin and glucose tolerance, responsivity to the anorectic effects of central insulin is enhanced. The results of these studies underscore the necessity to fully examine how dietary macronutrient manipulation affects multiple metabolic parameters to identify potential consequences.”
Read the full study here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2903931/